Anyone ever break a SBJ spindle at the upper BJ taper?

given the above, personally i'd switch it out to big bolt pattern. the difference in price and availability of parts is considerable; and the BBP stuff enjoys a robust aftermarket of upgrade components that are relatively inexpensive in comparison.

take all the stock stuff, bag it, tag it and stash it under the workbench for the next owner or if you wanna change it back.

if it was just a burger cruiser, i'd say ream it and roll with it. but considering that you're essentially tracking the car the upgrade starts to make more sense.